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首页> 外文期刊>Annales de l'I.H.P >An ultralight phononic beam with a broad low-frequency band gap using the complex lattice of acoustic black holes
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An ultralight phononic beam with a broad low-frequency band gap using the complex lattice of acoustic black holes

机译：使用复杂的声学黑洞的复杂晶格具有宽低频带隙的超高声梁光束

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摘要

An ultralight phononic beam (PB) using the complex lattice of acoustic black holes (ABHs) is designed for producing broad low-frequency band gaps (BGs). Its unit-cell contains in-series outward-and-inward-curved ABHs and is over one-third lighter than its simple-lattice counterparts. Ultrawide low-frequency BGs are achieved due to multi-modal and complex-modal behaviors and the reduced structure stiffness by extra ABH introduced in the unit-cell. The BGs are tunable to lower and broader frequencies by adjusting the residue thickness of each ABH. Furthermore, broad low-frequency vibration attenuations of the finite-size PB are investigated and experimentally verified. Our approach allows broadband low-frequency vibration control by using an ultralight structure. (C) 2019 The Japan Society of Applied Physics
机译：使用来自声学黑洞的复杂晶格（ABHS）的超轻函声梁（PB）专为生产宽的低频带空隙（BGS）而设计。其单位单元含有串联向外和内侧弯曲的ABH，并且比其简单格子对应物在三分之一较轻。通过在单元单元中引入的额外ABH，由于多模态和复杂模态行为和减小的结构刚度而实现了超广域的低频BG。通过调节每个ABH的残留物厚度，BGS可调谐到更低和更宽的频率。此外，研究了有限尺寸PB的宽低频减振和实验验证。我们的方法允许使用超级结构宽带低频振动控制。 （c）2019年日本应用物理学会

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  • 来源
    《Annales de l'I.H.P》 |2019年第7期|077002.1-077002.4|共4页
  • 作者

    Zhang Yanni; Chen Kean; Zhou Shengxi; Wei Zhengyu;

  • 作者单位

    Northwestern Polytech Univ Sch Marine Sci & Technol Xian 710072 Shaanxi Peoples R China|Northwestern Polytech Univ Minist Ind & Informat Technol Key Lab Ocean Acoust & Sensing Xian 710072 Shaanxi Peoples R China;

    Northwestern Polytech Univ Sch Marine Sci & Technol Xian 710072 Shaanxi Peoples R China|Northwestern Polytech Univ Minist Ind & Informat Technol Key Lab Ocean Acoust & Sensing Xian 710072 Shaanxi Peoples R China;

    Northwestern Polytech Univ Sch Aeronaut Xian 710072 Shaanxi Peoples R China;

    Northwestern Polytech Univ Sch Marine Sci & Technol Xian 710072 Shaanxi Peoples R China|Northwestern Polytech Univ Minist Ind & Informat Technol Key Lab Ocean Acoust & Sensing Xian 710072 Shaanxi Peoples R China;

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